Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas rodadas tiveram um tempo de 5:00 no UFC 155?
 ###Tabelas: CREATE TABLE 1943 (1943_id AUTO_INCREMENT PRIMARY KEY, Title VARCHAR, Series VARCHAR, Director VARCHAR, Release date VARCHAR, reissue? VARCHAR) CREATE TABLE singles:_6_2_titles_4_runners-up (singles:_6_2_titles_4_runners-up_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE honorifics (honorifics_id AUTO_INCREMENT PRIMARY KEY, Stem Meaning VARCHAR, 2nd person sg VARCHAR, 2nd person sg honorific VARCHAR, 3rd person sg VARCHAR, 3rd person sg honorific VARCHAR) CREATE TABLE all-time_series_records_against_big_12_members (all-time_series_records_against_big_12_members_id AUTO_INCREMENT PRIMARY KEY, Texas vs. VARCHAR, Overall Record VARCHAR, at Austin VARCHAR, at Opponent's Venue VARCHAR, at Neutral Site VARCHAR, Last 5 Meetings VARCHAR, Last 10 Meetings VARCHAR, Current Streak VARCHAR) CREATE TABLE mixed_martial_arts_record (mixed_martial_arts_record_id AUTO_INCREMENT PRIMARY KEY, Res. VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Event VARCHAR, Round INT, Time VARCHAR, Location VARCHAR)  
SELECT COUNT Round FROM mixed_martial_arts_record WHERE Time = 5:00 AND Event = ufc 155